MESON Chess Problem Database

Problem Display
PID: 34711 (2K5/N4BB1/1p1Npr2/b1k2P1n/RnP1Pp2/8/2pQ4/1b6 w - - 0 1)

Khramtsevich, Mikhail Nikolaevich

4th Prize, Uralski Problemist, 2000

2K5/N4BB1/1p1Npr2/b1k2P1n/RnP1Pp2/8/2pQ4/1b6

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.Qd4#
    • 1...Rg6
      • 2.Qd4#
    • 1...Rh6
      • 2.Qd4#
    • 1...Rxf7
      • 2.Qd4#
    • 1...Sa2
      • 2.Sb7#
    • 1...Sd5
      • 2.Sb7#
    • 1...Sa6
      • 2.Sb7#
    • 1...Sc6
      • 2.Sb7#
    • 1...exf5
      • 2.Sb7#
    • 1...e5
      • 2.Sb7#
  • Tries
    • 1.Bxf6?
      • threat
        • 2.Qd4#
      • 1...Sd3
        • 2.Sb7#
      • 1...Sd5
        • 2.Sb7#
      • 1...Sc6
        • 2.Sb7#
      • 1...e5
        • 2.Sb7#
      • 1...Sxf6!
    • 1.Rxb4?
      • threat
        • 2.Sb7#
        • 2.Rb5#
      • 1...Rxf7
        • 2.Rb5#
      • 1...b5
        • 2.Rxb5#
      • 1...Bxb4!
    • 1.Rxa5+?
      • 1...b5
        • 2.Rxb5#
      • 1...bxa5!
    • 1.Qc3?
      • threat
        • 2.Sb7#
      • 1...Kxd6
        • 2.Bf8#
      • 1...Rxf7
        • 2.Qd4#
      • 1...b5!
  • Keys
    • 1.Sdb5!
      • threat
        • 2.Qd4#
      • 1...Kxc4
        • 2.Qc3#
      • 1...Sd3
        • 2.Bf8#
      • 1...Sc6
        • 2.Qd6#
      • 1...e5
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(j);XP(E)::QAB1(A)
    • R(j);::QAB1(A)
    • R(j);XB(H)::QAB1(A)
    • S(c);::S(F)
    • P(i);XP(E)::S(F)
    • P(i);::S(F)
  • Tries
    • Try
      • B(I);XR(j)
      • Threat
        • QAB1(A)
      • Vars
        • S(c);::S(F)
        • P(i);::S(F)
      • Refutation
        • S(g);XB(I)
    • Try
      • R(B);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(j);XB(H)::R1(B)
        • P(h);::R1(B),XP(h)
      • Refutation
        • B(e);XR(B)
    • Try
      • R(B);CHECK,XB(e)
      • Vars
        • P(h);P_SPINP(h)::R1(B),XP(h)
      • Refutation
        • P(h);XR(B)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XS(F)::B(I)
        • R(j);XB(H)::QAB1(A)
      • Refutation
        • P(h);
  • Actual
    • S(F);
    • Threat
      • QAB1(A)
    • Vars
      • K(f);OGATEB,P-FLIGHT,P_SPINP(i),P_SPINS(c),XP(C)::QAR1(A)
      • S(c);::B(I)
      • S(c);::QAB1(A)
      • P(i);::QAB(A)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).